Container and blank therefor



Jan. 2, l940. A. s. ALLEN CONTAINER AND BLANK THEREFOR Original FiledApril 17, 1934 Patented Jan. 2, 1940 CONTAINER AND BLANK THEREFOR AlbertS. Allen, Greenburgh, N. Y., assignor, by

mesne assignments, to E. I. du Pont de Nemours & Company, Wilmington,Del., a corporation of Delaware application April 17, 19.34, semi No.720,927

' Renewed August 11, 1937 3 Claims.

This invention relates to containers. More particularly it relates tolined containers and blanks from which said containers are made.

Oily and greasy materials have heretofore gent erally been packaged incontainers of glass, metal or similar materials. Such containers wereusually discarded after the contents had been removed. As thesecontainers are comparatively expensive, attempts have been made topackage oily and greasy materials in inexpensive containers having acontainer shell or tube of cardboard or other similar material providedwith a liner of an oilproof and greaseproof material. In thesecontainers, when the liners were of the same length as the containershell or tube, the oily or greasy materials were not prevented fromcreeping around the ends of the oilproof and greaseproof linings. This,due to the absorptive nature of the container tubes, resulted in the oilor grease being absorbed thereby with the resultant loss of contentsand/or marring of the appearance of the containers. When the containerwas of the type which was formed by lapping the blank on itself, theexposed edge of the lapped joint on the interior of the containerabsorbed the oil or grease and produced the abovementioned undesirabledefects.

l have found that I can overcome the abovementioned disadvantages andproduce a container, particularly of the type formed by lapping a blankon itself, by providing a blank having secured thereto an oilproof andgreaseproof material which is at least folded back over the edge of theblank which constitutes a part of the lap joint and which is to beexposed in the interior of the container. If desired, the liner may alsobe back-folded over the edge of the blank which constitutes the top andbottom edges of the container.

It is, therefore, an object of this invention to provide a linedcontainer in which the edges exposed or adapted to come in contact byreason of the contents creeping are protected by the liner.

Another object of this invention is to provide a blank which is adaptedto be formed into a `container of the type previously mentioned.

Other objects of the invention will become apparent from the followingdescription, appended claims and accompanying drawing forming a part ofthis specification and wherein:l

Figure 1 is a perspective view of one embodiment of a blank made inaccordance with the instant invention.

(Cl. 22S-3.5)

Figure 2 is a perspective view of the blankA shown in Figure l at onestage in the manufacture thereof.

Figure 3 is a perspective view of another form of blank made inaccordance with the instant invention. 5

Figures 4 and 5 are perspective views of the. blank shown in Figure 3 atdifferent stages in the manufacture thereof.

Figure 6 diagrammatically illustrates the initial operation of formingthe container from the blank.

Figure 7 is an end view of the container shell.

Figure 8 is a front elevation partly in section of a container made inaccordance with the principles of this invention. w

Figure 9 is a section adjacent the end of the container made from theblank illustrated in Figure 3.

Referring now to the drawing wherein like reference numerals designatelike parts, the numeral 0 i designates a sheet of material which is toconstitute the body portion of the container. In the preferredembodiment of the invention, the sheet l is made of any suitablematerial, preferably cardboard, paper or the like. A sheet of oilproofand greaseproof material 2, which is tov constitute the liner of thebody portion of the container, is adhesively secured by means of anysuitable adhesive to a predetermined area of the cardboard l. As clearlyshown in Figure 2, the oilproof and greaseproof material 2 is sodisposed on the cardboard l that a portion thereof overlaps the edge 3of the cardboard i. This overlapping portion is folded back over theedge 3as shown in Figure 2. In the preferred form, the folded-backportion ll is also adhesively secured to the cardboard i. l

In the process of making this blank, theoilproof and greaseproofmaterial 2 is adhesively secured to the cardboard l, the adhesive beingapplied to at least one of the materials to be united, eithersimultaneously or prior to the uniting thereof. The lamination of thetwo materials and also the folding back of the overlapping portion 4 ofthe oilproof and greaseproof material 2 may be effected simultaneously,or the foldingback operation may be performed after the laminatingoperation.

To form a body portion of a container from the blank previouslydescribed, the blank is fold- 50 ed, convolutely wound or otherwiseformed into the desired shape. In the initial operation of forming thebody portion of the container, the overlap 4 of the oilproof andgreaseproof material 2 is brought into position so that it overlaps 55the opposite edge 5 of the oilproof material, as shown in Figure 6. Theremainder of the blank is then convolutely wound to form the ultimatecontainer. A suitable adhesive is applied either prior to orsimultaneously with the lapping operation. The body portion of thecontainer thus produced is then provided with end portions or closures 6of any convenient type, such as metal closures of the drum head type'.If desired, a luting composition may be applied between each oi the endclosures and the body portion of the container.

It is to be noted that in the lapped joint 'l the edge of the cardboardI is rendered nonabsorptive by the oilproof material 2 being backfoldedthereover. The depth of the annular flange 8 of the end closure issuiiicient to aid in inhibiting the creeping of the oily matter aroundthe edges of the bottom and top of the container. The dimensions of thecardboard and the material constituting the liner will, of course, varydepending upon the size of the container and the number of layersconstituting the wall of the container. Figure 7 illustrates the wall ofthe body portion as made of three layers of the cardboard but it is tobe understood that a greater or lesser number of layers may be usedwithout departing from the nature of the instant invention. The lengthof the material 2 constituting the liner should be such that when theblank is formed into the body portion, the entire interior surface willbe lined and the overlap 4 will overlap a portion of the liner adjacentthe edge 5.

In the drawing, for purposes of. illustration, the body portion is shownas being cylindrical. It is to be understood that the invention is notrestricted to the precise form, since it is obvious that the bodyportion may be made with any desired' cross-section, for example,square, rectangular, octagonal, elliptical, etc. Additionally, thoughthe invention is described in connection with body portions ofcontainers, it is obvious that the principles thereof may be-used forthe manufacture of boxes, cartons, etc.

, In some cases, itis desirable to also provide protection on the endsof the container to positively prevent any` undesirable resultsoccasioned by the creeping of the oil. With this in view, theA instantinvention in one of its phases also con-A templates back-folding theliner over theend of l' the body portion.

Referring now to Figure 4, a sheet ofoilproof and greaseproofl material2 is adhesively secured to the cardboard I. As is clearly shown inFigure 4, the disposition and size .of the sheet is such that it willoverlap the edge 3 and the edges 9 and I0,'as indicated, of thecardboard l. As explainedin connection with Figures 1 and 2 above, inthe manufacture of the blank shownin Figure 3, the portion of theoilproof and' greaseproof ,material `overlapping the edge 3 of" thecardboard isfolded back on itself to assume the form and shape shownl inFigure5. Thetblank* is then subjected to an operation wherein theportions overlapping the edges 9 and I0 are backfolded to produce theoverlaps Ii and I2.- The overlaps 4, II and I2 may be adhesivelysecured` to the cardboard I. The blank shown in Figure 3 is then formedintoa Vbody portion'of a container in the same manneras is aboveexplained in connection with the formation of a body portion from theblank shown in Figure 1. The end portions 5 andk E are then secured tothe body portion.

The body portion lproduced as immediately described, not only has theexposed edge of the lap joint protected by the liner, but theedge at thetop and bottom thereof is also protected as is shown in Figure 9.

The liner 2, when the container is to be used for packaging oily andgreasy materials, is of an oilproof and greaseproof nature. Asillustrative examples of such oilproof and greaseproof material may bementioned regenerated cellulose sheeting.

Though the invention has been particularly described in connection withmaking an oilproof and greaseproof container, it is obvious that theprinciples thereof are equally applicable to containers employed forother purposes. Generally, the liner is formed of a material whichproduces the desired results. For example, if the contents of. thepackage is desired to be retained in its original fresh state, this maybe secured by employing a moistureproof. material, such as moistureproofregenerated cellulose sheets, moistureproof paper, etc. as the liner.Similarly, a container of the type herein described may besatisfactorily used for the packaging of frozen juices, such as frozenorange juice, grape juice, prune juice, etc. In such cases the liner, ofcourse, must be of a material which will not deleteriously aifect thecontents and vice versa. A liner made of cellulose acetate sheeting hasgiven satisfactory results for these purposes.

Since it is obvious that various changes and modifications may be madein the above description without departing from the nature or spiritthereof, this invention is not restricted thereto except as set forth inthe appended claims.

I claim:

1. A blank to be convolutely wound into a lined tubular body portion ofa container having a lapv joint on the interior thereof comprising asheet of absorbent material which is to constitute the wall of said bodyportion, said sheet being of a length to form a plurality of layers whenconvolutely Wound, a sheet of non-absorbent material which is toconstitute the liner adhesively secured to said sheet of absorbentmaterial and only extending over a portion of the length thereof, thesheet which is to constitute the liner being back-folded over the edgeof said absorbent sheet which is to be exposed in the interior of4the-ultimate body portion to prevent absorption and also back-foldedover a portion of each of lthe edges which are to constitute the top andsheet material of a length to be formed into a -plurality of layers whenconvolutely wound, a

covering ofY an oilproof and greaseproof material on one side of saidabsorbent sheet material, said oilproof and greaseproof materialextending over a portion of the length of said absorbent material andback-folded over at least the edge of the absorbent material which is tobe exposed on the interior of the container when the blank isconvolutely wound and also back-folded over the edges of said absorbentmaterial which is to constitute the top and bottom edges of thecontainer, said blank being convolutely wound to form a body portionformed of a plurality of layers of said absorbent material and in which`the absorbent material which is to be exposed body portion the oilproofand greaseproof material constitutes a liner on the interior exposedsurface of the body portion and overlaps on the first-mentionedback-folded portion thereof only, and end portions secured to the topand bottom edges respectively of' the body member, said end portionshaving flanges of a depth to aid in inhibiting the creeping of thepackaged oily contents around the top and bottom edges of the bodyportion.

3. A container comprising a body portion formed from a blank comprisingan absorbent sheet material of a length to be formed into a plurality oflayers when convolutely wound, a

covering of an oilproof and greaseproof material' on one side of said.absorbent sheet material, said oilproof and greaseproof materialextending over a portion oi the length of said absorbent material andback-folded over atleast the edge of on the interior oi the containerwhen the blank is convolutely wound and also back-folded over the edgesof said absorbent material which is to constitute the top and bottomedges of the container, said blank being convolutely Wound to form abody portion formed of a plurality of layers of said absorbent materialand in which body portion the oilproof and greaseproof materialconstitutes a. liner on the interior exposed surface of the body portionand overlaps only on and is adhesively secured to the first-mentionedback-folded portion, and end portions secured to the top and bottomedges respectively of the body member, said end portions having flangesof a depth to aid in inhibiting the creeping of the packaged oilycontQnts around the top and bottom edges of the body portion.

